[process] MapSPAM Measure Crop Potential Revenue

"We measure the crop potential revenue (Rev) – determined by market accessibility (Access), crop prices (Price), and crop potential yield (PotYield) – as an allocation parameter, which fully considers the influence of farmers' crop choices."
Yu, Qiangyi; You, Liangzhi; Wood-Sichra, Ulrike; Ru, Yating; Joglekar, Alison K. B.; Fritz, Steffen et al. (2020): A cultivated planet in 2010 – Part 2: The global gridded agricultural-production maps. In: Earth Syst. Sci. Data 12 (4), S. 3545–3572. DOI: 10.5194/essd-12-3545-2020.